CONTENTS OF VOL. IV. 



[SEVEXTH SERIES.] 



NUMBER XIX. 



Page 



I. On new Species of Histerid(e, and Notices of others. Bv 



G. Le-«-is, F.L.S '. 1 



II. Rhynchotal Notes. — Heteroptera : Scutellerince and Grapho- 

 somime. By W. L. Distant 29 



III. Description of a new Genus and some new Species of Fos- 

 Borial Hymenoptera fi'om tlie Oriental Zoological Region. By 



P. Cameron 52 



IV. The Larval Stage of Hy2)oderma bovis. By P. Koorevaar, 

 Veterinary Surgeon to the Amsterdam Public Abattoir 69 



Netc Book: — The Penycuik Experiments. By J. C. Ewart, M.I)., 

 F.R.S., Regius Professor of Natural History, University of 

 Edinburgh 74 



On Ecdysis in Insects, considered as a means of Defence against 

 Animal or Vegetable Parasites. — Special Roles of the Tracheal 

 and Intestinal Ecdyses, by J. Kiinckel d'Herculais 78 



NUMBER XX. 



V. Notes on the Mollu.sca of the Arabian Sea, Persian Gulf, and 

 Gulf of Oman, mostly dredged by Mr. F. W. Townsend, with 

 Descriptions of Twentv-seven Species. By James Cosmo Melvill, 

 M.A., F.L.S., &c. (Plates I. & II.J ...."' ^1 



VI. Observations on the Classification of Birds. By Dr. I». W. 

 Shufeldt l*Jl 



